Development
On June 4, 2024, Paramount Global co-CEO Brian Robbins said at a shareholder presentation that there were plans for a "franchise extension" of Blue Bloods . [22]
The show was not planned as a Blue Bloods spinoff, but had originally been pitched by writers Brandon Sonnier [23] and Brandon Margolis [24] as a drama titled after the Boston neighborhood Jamaica Plain focused on a transfer from the LAPD to Boston. In February 2025, CBS officially picked up the show straight-to-series for the 2025–2026 broadcast season. [25]
The first episode was directed and produced by Anthony Hemingway. [5]
Casting
In addition to Wahlberg, CBS also announced the casting of Sonequa Martin-Green as Lena Silver in May 2025. [4] The new character was originally called Lena Peters in the initial announcement. In May 2025, Ernie Hudson was cast as a series regular for the series. [7] Hudson had previously appeared on Blue Bloods playing another character in a guest role in 2018 in Season 8. [26] In June 2025, Maggie Lawson, Gloria Reuben, and Marcus Scribner joined the cast in starring roles. [27] [28] [8] In July 2025, Mika Amonsen was cast as a series regular as Danny Reagan's younger son Sean, a recasting of the role played by Andrew Terraciano on the original show. [29] In the same month, Bridget Moynahan joined the cast to reprise her role as Erin as a special guest star and set to direct an episode as well. [12]
Asked about participation in a possible spin-off, Tom Selleck said he was "open to suggestions because I love Frank Reagan," but added that he did not see the character retiring and going off to a small town. [30]
